twochai, thanks.
I don't have a chart to hand, but a pedantic point is that 'glide path, (slope) is normally associated with a continuous descent to landing, whereas a 'required descent angle' implies a change in the vertical approach path.
The latter involves an unstable approach. Modern approach systems and procedures are designed to minimise such changes, but then require an aircraft which is capable of both descending steeply and flaring from the approach - probably excluding a 757.